Re: [PATCH v9 1/4] iommu: Add dummy dev_iommu_fwspec_get() helper

Ulf Hansson
2022-11-02T15:28:13Z

On Fri, 28 Oct 2022 at 15:02, Prathamesh Shete <pshete@nvidia.com> wrote:
>
> This dummy implementation is useful to avoid a dependency on the
> IOMMU_API Kconfig symbol in drivers that can optionally use the IOMMU
> API.
>
> In order to fully use this, also move the struct iommu_fwspec definition
> out of the IOMMU_API protected region.
>
> Signed-off-by: Thierry Reding <treding@nvidia.com>
> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>

It seems like you claimed authorship of the patch [1], that was
authored by Thierry and updated the commit message header.

Can you please restore the patch to its original that was posted by Thierry?

Kind regards
Uffe

[1]
https://lore.kernel.org/linux-mmc/20221018105149.820062-1-thierry.reding@gmail.com/

> ---
> include/linux/iommu.h | 39 +++++++++++++++++++--------------------
> 1 file changed, 19 insertions(+), 20 deletions(-)
>
> diff --git a/include/linux/iommu.h b/include/linux/iommu.h
> index ea30f00dc145..afa829bc4356 100644
> --- a/include/linux/iommu.h
> +++ b/include/linux/iommu.h
> @@ -173,6 +173,25 @@ enum iommu_dev_features {
>
> #define IOMMU_PASID_INVALID (-1U)
>
> +/**
> + * struct iommu_fwspec - per-device IOMMU instance data
> + * @ops: ops for this device's IOMMU
> + * @iommu_fwnode: firmware handle for this device's IOMMU
> + * @flags: IOMMU_FWSPEC_* flags
> + * @num_ids: number of associated device IDs
> + * @ids: IDs which this device may present to the IOMMU
> + */
> +struct iommu_fwspec {
> + const struct iommu_ops *ops;
> + struct fwnode_handle *iommu_fwnode;
> + u32 flags;
> + unsigned int num_ids;
> + u32 ids[];
> +};
> +
> +/* ATS is supported */
> +#define IOMMU_FWSPEC_PCI_RC_ATS (1 << 0)
> +
> #ifdef CONFIG_IOMMU_API
>
> /**
> @@ -600,25 +619,6 @@ extern struct iommu_group *generic_device_group(struct device *dev);
> /* FSL-MC device grouping function */
> struct iommu_group *fsl_mc_device_group(struct device *dev);
>
> -/**
> - * struct iommu_fwspec - per-device IOMMU instance data
> - * @ops: ops for this device's IOMMU
> - * @iommu_fwnode: firmware handle for this device's IOMMU
> - * @flags: IOMMU_FWSPEC_* flags
> - * @num_ids: number of associated device IDs
> - * @ids: IDs which this device may present to the IOMMU
> - */
> -struct iommu_fwspec {
> - const struct iommu_ops *ops;
> - struct fwnode_handle *iommu_fwnode;
> - u32 flags;
> - unsigned int num_ids;
> - u32 ids[];
> -};
> -
> -/* ATS is supported */
> -#define IOMMU_FWSPEC_PCI_RC_ATS (1 << 0)
> -
> /**
> * struct iommu_sva - handle to a device-mm bond
> */
> @@ -682,7 +682,6 @@ bool iommu_group_dma_owner_claimed(struct iommu_group *group);
>
> struct iommu_ops {};
> struct iommu_group {};
> -struct iommu_fwspec {};
> struct iommu_device {};
> struct iommu_fault_param {};
> struct iommu_iotlb_gather {};
> --
> 2.17.1
>